纵磁结构真空灭弧室的三维磁场数值分析

Numerical Calculation of Axial Magnetic Field of Vacuum Interrupters

根据单积分法原理编制了一套三维磁场计算软件,对杯状纵磁、1/2匝线圈纵磁、四极纵磁三种结构的真空灭弧室自生纵向磁场进行了三维数值分析,给出磁场的总体分布以及几个主要参数对磁场分布的影响,并且对其中两种结构的磁场进行实际测量,验证了该软件计算的准确性.

A software for 3-D magnetic field calculation is designed by using single integration method. 3-D magnetic field generated by the current - carrying contacts is calculated numerically for three kinds of vacuum interrupters named cup - shaped axial magnetic structure, single pole (1/2 coil) structure, multi - pole axial magnetic structure. Based on the calculation, the distribution of magnetic field and the influ-ence of some key parameters are analyzed. Magnetic field in two of the above mentioned structures is measured and the result shows the calculation is accurate.